KR101909788B1 - Multi-layered film packing material and manufacturing method thereof - Google Patents

Abstract

A multilayer film packaging material having a nonwoven fabric therein and a method for producing the same are provided. The multilayer film packaging material may include a first layer portion including a print layer, a second layer portion having a first layer portion laminated on one side, a nonwoven layer, and a third layer portion laminated on the other side of the second layer portion. The multilayer film packaging material can be excellent in not only mechanical strength but also flexibility, water resistance and interlayer adhesion.

Description

[0001] MULTI-LAYERED FILM PACKING MATERIAL AND MANUFACTURING METHOD THEREOF [0002]

The present invention relates to a multilayer film packaging material and a method of manufacturing the same, and more particularly, to a multilayer film packaging material having a nonwoven fabric therein and a method of manufacturing the same.

Generally, sanitary ware related packaging materials such as water towels are provided in the form of a single package of contents made of vinyl material, and a multilayered film laminated packaging material is used for this purpose. In order to effectively protect the inside of the packaging material from external air or moisture, and to maintain a suitable packaging form, the packaging material in which the multilayer film is laminated has a PET layer containing a printing layer such as a trademark, And a PE layer for preventing or maintaining the shape. However, these packaging materials lack flexibility, flexibility and mechanical strength. Accordingly, packaging materials having high flexibility and high mechanical strength are required.

The present invention relates to a multilayer film packaging material having high flexibility and flexibility while including a nonwoven fabric between resin films in order to solve the problems of the prior art, and a manufacturing method thereof.

The present invention also relates to a multilayered film packaging material comprising a nonwoven fabric between resin films to improve the surface texture and visual texture, and a method for producing the same.

A multilayer film packaging material according to an embodiment of the present invention will be described. The multilayer film packaging material may include a first layer portion including a print layer, a second layer portion on which the first layer portion is laminated on one surface, a non-woven layer, and a third layer portion laminated on the other surface of the second layer portion.

According to one aspect of the present invention, the second layer portion may be coated with a PE (polyethylene) resin on both sides of the nonwoven fabric layer.

According to one aspect of the present invention, the nonwoven fabric layer may include one material selected from the group consisting of polyethylene (PE), polyethylene terephthalate (PET), polypropylene (PP), polyolefin, nylon, polybutylene terephthalate (PBT), and polyphenylene sulfide .

According to one aspect, the first layer portion may include a PET (polyethyleneterephthalate) film.

According to one aspect, the first layer portion may include the printing layer in which information of contents and design of a product are printed on the PET (polyethylen terephthalate) film in a gravure printing manner.

According to one aspect, the first layer portion may further include a transparent layer including an oriented polypropylene (OPP) film.

According to one aspect, the third layer portion may include a multi-layered LLDPE (Linear low-density polyethylene) film mixed with metallocene PE, 200 to 2500 ppm of slip agent and 1 to 10% of surfactant.

A method of manufacturing a multilayer film packaging material according to an embodiment of the present invention includes the steps of forming a second layer portion including a nonwoven fabric layer forming a first layer portion and stacking the first layer portion on one surface of the second layer portion .

According to one aspect, the step of forming the second layered portion may include a step of providing the nonwoven fabric layer and a step of extrusion lamination of the PE film on both sides of the nonwoven fabric layer.

According to one aspect, the step of forming the second layer part may be performed by coating the PE powder on both sides of the nonwoven fabric layer and the nonwoven fabric layer.

According to one aspect of the present invention, the method may further include the step of laminating the third layer portion on the other surface of the second layer portion.

According to the present invention, a multilayer film packaging material produced by including a nonwoven fabric between resin films can improve mechanical strength while having high flexibility and flexibility.

Further, the multilayer film packaging material produced according to the present invention can improve the surface texture and the visual texture.

In addition, the multilayer film packaging material produced according to the present invention can improve water resistance and interlayer adhesion.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view schematically showing a multilayer film packaging material according to an embodiment. FIG.
2 is a flowchart showing a method of manufacturing a multilayer film packaging material according to an embodiment.

Hereinafter, embodiments will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference symbols as possible even if they are shown in different drawings. In the following description of the embodiments, detailed description of known functions and configurations incorporated herein will be omitted when it may make the best of an understanding clear.

In describing the components of the embodiment, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected or connected to the other component, Quot; may be "connected," "coupled," or "connected. &Quot;

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view schematically showing a multilayer film packaging material according to an embodiment. FIG.

Referring to FIG. 1, a multilayer film packaging material according to an embodiment may include a first layer portion, a second layer portion, and a third layer portion.

The first layer 100 may include a print layer 110. The print layer 110 may include a synthetic resin film. For example, the printing layer 110 may include a PET (polyethylene terephthalate) film. Further, information on the content and the design of the product can be printed on the print layer 110. [

The first layer 100 may further include a transparent layer 130. For example, the transparent layer may comprise an oriented polypropylene (OPP) film. Here, since the OPP film included in the transparent layer is transparent, glossy, and excellent in moisture-proof property, it is preferable to use an OPP film.

The second layer portion 200 may include a nonwoven layer 210. For example, the nonwoven layer 210 may comprise a meltblown nonwoven fabric. The nonwoven fabric layer 210 may be a meltblown nonwoven fabric. The monofilament diameter of the meltblown nonwoven fabric may be 1 to 10 mu m.

The nonwoven fabric layer 210 may be formed of a material selected from the group consisting of PE (polyethylene), PET (polyethyleneterephthalate), PP (polypropylene), PO (polyolefin), nylon, polybutylene terephthalate (PBT), and polyphenylene sulfide Nonwoven fabric. The nonwoven fabric layer 210 may include a polypropylene (PP) material for easy lamination. The nonwoven fabric layer 210 may preferably include a nonwoven fabric having a weight per unit area of 15 to 40 g / m 2 and a thickness of 30 to 200 μm.

In the embodiment of the present invention, the use of the meltblown nonwoven fabric is illustrated by way of example, but the present invention is not limited thereto. It is also possible to use spunbond nonwoven fabrics and SMS (Spunbond-Meltblown-Splunk) nonwoven fabrics.

The second layer 200 may further include a coating layer 230 to reinforce the thermal bonding and waterproofing function of the nonwoven fabric layer 210. The coating layer 230 may be formed of a synthetic resin material on both sides of the nonwoven fabric layer. For example, the coating layer 230 may be formed by laminating a PE (polyethylene) film. Also, the coating layer 230 may be formed by applying a PE resin powder.

The third layered structure 300 may be a layer that contacts the contents. The third layer 300 may include a linear low-density polyethylene (LLDPE) film. The LLDPE film is excellent in water resistance, heat resistance, oil resistance, and strength, and can prevent oil from being frozen in the packaging material, thereby contributing to transparency maintenance. For example, the third layer 300 may include a multi-layered LLDPE (Linear low-density polyethylene) film mixed with metallocene PE, 200 to 2500 ppm of slip agent and 1 to 10% of surfactant.

The first layer portion 100 of the multilayer film packaging material is laminated on one side of the second layer portion 200 having the nonwoven fabric and the third layer portion 300 is laminated on the other side of the second layer portion 200 to form a multilayer film packaging material can do.

Hereinafter, a method for producing a multilayer film packaging material according to an embodiment will be described. In describing the method of manufacturing the multilayer film packaging material, the description overlapping with the above description is omitted.

2 is a flowchart showing a method of manufacturing a multilayer film packaging material according to an embodiment.

As shown in FIGS. 1 and 2, the method for manufacturing the multilayer film package 10 according to the embodiment includes the steps of forming the first layer 100, forming the second layer 200, (100) on one side of the second layer part (200).

Step S10 of forming the first layer portion 100 may produce the first layer portion so as to include the print layer 110 and the transparent layer 130. [ For example, the first layer 100 may be formed by laminating the print layer 110 and the transparent layer 130 in close contact with each other.

The print layer 110 constitutes the outer surface of the multilayer film packaging material 10 and can be formed by printing information on the contents to be stored and a product design on a PET (polyethyleneterephthalate) film. Information on the contents to be printed on the print layer 110 and the design of the product may be preferably printed in a gravure manner in the manufacture of wrappers of various sizes and clear images.

The transparent layer 130 constituting the outermost surface of the multilayer film packaging material 10 may be closely contacted to the print layer 110 and pressed to form the first layer portion. Here, the transparent layer 130 may include an oriented polypropylene (OPP) film that is transparent, glossy, and highly moisture-resistant. The first layer unit 100 having such a configuration can display a taste and content information to the user (S10).

The step of forming the second layer portion 200 including the nonwoven fabric layer 210 may include a step of providing a nonwoven fabric layer and an extrusion lamination of a PE film on both sides of the nonwoven fabric layer. For example, the coating layer 230 can be formed by coating a polyethylene (PE) film on both sides of the nonwoven fabric 210 layer.

The nonwoven fabric layer 210 may be a meltblown nonwoven fabric. The meltblown nonwoven fabric can be irradiated through a spinning nozzle formed of a few hundred orifices of a polymer capable of forming fibers with a thermoplastic resin. The polymer extruded by the spinning nozzle can be formed by superimposing microfine fibers on the collecting conveyor at the outlet of the spinning nozzle in a molten state by high temperature and high pressure air. The nonwoven fabric layer 210 may be formed of one of PE, polyethylene terephthalate, PP, polyolefin, nylon, and PPS. The nonwoven fabric layer 210 may be made of a polypropylene (PP) material for ease of lamination. The nonwoven fabric layer 210 may preferably include a nonwoven fabric having a weight per unit area of 15 to 40 g / m 2 and a thickness of 30 to 200 μm.

The coating layer 230 may be formed on both sides of the nonwoven fabric layer 210 to reinforce the thermal adhesion and waterproof function. For example, the coating layer 230 may be formed by laminating a PE (polyethylene) film on both surfaces of the nonwoven fabric layer 210.

Meanwhile, the step of forming the second layer part 200 including the nonwoven fabric layer 210 may include a step of providing a nonwoven fabric layer and a step of applying and coating the PE powder on both sides of the nonwoven fabric layer. For example, in the step of forming the second layer portion 200 including the nonwoven fabric layer 210, the coating layer 230 may be formed by applying PE resin powder coating to both surfaces of the nonwoven fabric layer 210. By forming the coating layer 230 on the nonwoven fabric layer 210, interlaminar adhesion can be improved (S20).

The step of laminating the first layer part 100 on one side of the second layer part 200 may be performed such that the first layer part 100 is laminated on one side of the second layer part 200. [ For example, the first layer portion 100 may be laminated on one surface of the second layer portion 200 at a high temperature in a direction in which the first layer portions 100 are in close contact with each other.

The method for manufacturing the multilayer film packaging material 100 may further include the step of laminating the third layered portion 300 on the other surface of the second layered portion 200.

The third layered portion 300 includes a multi-layered LLDPE (Linear low-density polyethylene) film mixed with metallocene PE, 200 to 2500 ppm of a slip agent and 1 to 10% of a surfactant, .

On the other hand, the first layer portion and the third layer portion may be pressed and laminated on both sides of the second layer portion so as to be in close contact with each other. It is also possible that the first layer portion and the third layer portion are respectively applied to both surfaces of the second layer portion by being injected. As a result, the multilayer film package 10 may have a structure in which the first layer portion, the second layer portion and the third layer portion are sequentially laminated (S30).

Since the multi-layer film packaging material 10 contains a nonwoven fabric, it is preferable that the multi-layer film packaging material 10 is used in a packaging material related to sanitary articles such as a towel and the like, because it has excellent surface texture and visual texture as well as mechanical strength.

Hereinafter, the mechanical strengths of the multilayer film packaging material having the structure in which the conventional PET film and the LLDPE film are laminated and the multilayer film packaging material 10 including the non-woven fabric layer according to an embodiment will be described in comparison.

The table below shows the experimental values of the strength of the multilayered film packaging material produced according to the method of manufacturing the multilayered film packaging material according to one embodiment.

Comparative Example: Manufacture of Conventional Multilayer Film Packaging Material

Multilayer film packaging materials were prepared by extrusion laminating LLDPE (linear low-density polyethylene) films on PET (polyethylen terephthalate) films.

EXAMPLES: Preparation of Multilayer Film Packaging Materials According to Examples of the Invention

A PE (polyethylene terephthalate) film and a LLDPE (linear low-density polyethylene) film were coated with a polyethylene (PE) film on both sides of a non-woven fabric having a weight per unit area of 15 to 40 g / And extrusion lamination was performed to produce a multilayer film packaging material.

Test Example: Evaluation of Mechanical Strength of Multilayer Film Packaging Materials

The fracture strengths in the MD and TD directions of the comparative example and the example were measured for a specimen having an area of 15 mm 2 using a universal testing machine. The fracture strength of the specimen was measured when the specimen was deformed 10 cm at a speed of 100 cm / min.

Breaking Strength (kgf) Comparative Example Example MD 0.25234 0.61894 TD 0.51855 0.88762

Referring to Table 1, it was confirmed that the multilayered film packaging material comprising the nonwoven fabric according to the embodiment of the present invention had excellent breaking strength. Furthermore, it was confirmed that the multilayered film packaging material according to the example of the present invention had better breaking strength in the MD direction than the comparative example.

The method of manufacturing the multilayer film packaging material according to the embodiments can improve the mechanical strength while improving the flexibility and flexibility of the multilayer film packaging material by including the nonwoven fabric between the resin films.

Further, the multilayer film packaging material can improve the surface texture and the visual texture.

Further, the multilayer film packaging material can improve water resistance and interlayer adhesion.

Although the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, And various modifications and changes may be made thereto without departing from the scope of the present invention. Accordingly, the spirit of the present invention should not be construed as being limited to the embodiments described, and all of the equivalents or equivalents of the claims, as well as the following claims, belong to the scope of the present invention .

10: Multilayer film packaging material
100:
110: Printed layer
130: transparent layer
200: second layer
210: Nonwoven fabric layer
230: Coating layer
300: Third layer

Claims (11)

A first layer including a print layer;
A nonwoven fabric layer comprising a first layer portion laminated on one surface thereof, a melt blown nonwoven fabric made of polypropylene (PP) having a weight per unit area of 15 to 40 g / m 2 and a thickness of 30 to 200 탆, A second layer having a coating layer formed by applying resin powder of polyethylene (PE) material to the first layer; And
A third layer stacked on the other surface of the second layer portion;
Wherein the multi-layer film packaging material comprises: delete delete The method according to claim 1,
Wherein the first layer portion comprises:
Multilayer film packaging material comprising PET (polyethylen terephthalate) film The method of claim 4, wherein
Wherein the first layer portion comprises:
Wherein the printed layer is printed on the PET (polyethyleneterephthalate) film by printing information of contents and product design in a gravure printing manner. The method according to claim 1,
Wherein the first layer portion comprises:
A multilayer film packaging material further comprising a transparent layer comprising an oriented polypropylene (OPP) film. The method according to claim 1,
The third-
Layered film packaging material comprising a multi-layered LLDPE (Linear low-density polyethylene) film mixed with metallocene PE, 200 to 2500 ppm of a slip agent and 1 to 10% of a surfactant. Forming a first layer portion;
Forming a second layer portion including a nonwoven layer; And
Stacking the first layer portion on one surface of the second layer portion;
Lt; / RTI >
The forming of the second layer portion may include:
Providing a nonwoven fabric layer comprising a PP meltblown nonwoven fabric having a weight per unit area of 15 to 40 g / m < 2 > and a thickness of 30 to 200 mu m; And
Applying and coating PE powder on both sides of the nonwoven fabric layer;
≪ / RTI > delete delete 9. The method of claim 8,
And laminating a third layer portion on the other surface of the second layer portion.

Images